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98 6 98 7 98 8 98 9 99 0 99 1 99 2 99 3 99 4 99 5 99 6 99 7 99 8 99 9 10 00 10 01 1942 1941 1940 1939 1938 1937 1936 1935 1934 1933 1932 1931 1930 1929 1928

= Free Coordinate    = Occupied(Single Region)     = Occupied (Var Region)     = Center of the grid